On topic: Tech news to know now

They’ve said it before and they said it again at yesterday’s shareholders meeting: Twitter’s top executives are hanging on to their shares, and have “a clear plan and vision” about the San Francisco company’s future, according to CEO Dick Costolo. Twitter shares are down more than 1 percent as of this post.

Amazon, Groupon are among sites with worst password security, according to a study, which also said more than half of 80 websites surveyed didn’t lock accounts after 10 incorrect password tries.